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Individual Calculations April 2008 |
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| Van Rensburg, Ryan Total change: 9.75 | |   |
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| African Junior Championships 2007/8 (Boys) | Lilongwe | RSA | 2007-12-29 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2038 | 1946 | 0.50 | 3 | -0.63 | 25 | -15.75 | |
|  Wageih, Kareim | f | | 2108 | EGY | 0.50 | 1 | 0.21 | 25 | 5.25 | |  Klaasen, Celvin | | | 1982 | RSA | 0.00 | 1 | -0.45 | 25 | -11.25 | | | Greeff, Melissa | | wm | 2025 | RSA | 0.00 | 1 | -0.39 | 25 | -9.75 | |
Rc - average rating of rated opponents, Ro - rating of a player in a tournament, Rp - rating performance of an unrated player, W - points won in a tournament against rated opponents, N - total number of games against rated opponents, Change - change used for calculation according to formula, K - development coefficient, Kchg - rating change of a player calculated as (K * change) | | | | Waterkloof Open Prestige Section | Pretoria | RSA | 2008-02-06 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2046 | 1946 | 2.50 | 4 | 1.02 | 25 | 25.50 | |
| | Pistorius, Riani | | | 2058 | RSA | 1.00 | 1 | 0.65 | 25 | 16.25 | | | Solomons, Anzel | | wm | 1899 | RSA | 1.00 | 1 | 0.43 | 25 | 10.75 | | | Kvisla, Johannes | | | 2130 | NOR | 0.50 | 1 | 0.24 | 25 | 6.00 | | | Jurgensen, Graham I. | c | | 2095 | RSA | 0.00 | 1 | -0.30 | 25 | -7.50 | |
Rc - average rating of rated opponents, Ro - rating of a player in a tournament, Rp - rating performance of an unrated player, W - points won in a tournament against rated opponents, N - total number of games against rated opponents, Change - change used for calculation according to formula, K - development coefficient, Kchg - rating change of a player calculated as (K * change) | | |
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